Home / 28,317.80-39,079.57-15,571.95

Finding the Fourth Proportional to 28,317.80, 39,079.57 and 15,571.95

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Solution

The fourth proportional to 28,317.80, 39,079.57 and 15,571.95 is: 21,489.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.80 : 39,079.57 = 15,571.95 : x
  2. Step 2: Convert to fraction form
    28,317.80/39,079.57 = 15,571.95/x
  3. Step 3: Cross multiply
    28,317.80x = 39,079.57 × 15,571.95
  4. Step 4: Simplify right side
    28,317.80x = 608,545,032.20
  5. Step 5: Solve for x
    x = 608,545,032.20/28,317.80
  6. Step 6: Final answer
    x = 21,489.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.